Electrochemistry of conductive polymers 38. Electrodeposited poly(3,4-ethylenedioxy-thiophene) studied by current sensing atomic force microscopy

Article Abstract:

The electrical and morphological properties of poly(3,4-ethylenedioxythiophene) (PEDOT) thin films electrodeposited on gold-on-silicon electrodes by galvanostatic, potentiostatic and potentiodynamic methods are investigated by using current sensing atomic force microscopic experiments. The vertical conductivities of the PEDOT films have shown significant increases upon increase in their thickness and the band gaps obtained by two different methods, such as the I/V characteristics and absorption spectroscopic measurements, have shown excellent agreement with each other.

Polymers, Observations, Structure, Thiophene, Electrodeposition

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Electrochemistry of conductive polymers. 32. nanoscopic examination of conductivities of polyaniline films

Article Abstract:

The conductivities of electrochemically prepared polyaniline (PAn) films are determined by using an atomic force microscopic tip with a conducting probe after the films were doped/dedoped at various potentials. The results indicated that the PAn films are rather inhomogeneous, even though the film is doped or dedoped until no further anodic or cathodic currents flow. The inhomogeneity was shown to be present even in the PAn nanostructures.

Conducting polymers

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Electrochemistry of conductive polymers 36. pH dependence of polyaniline conductivities studied by current-sensing atomic force microscopy

Article Abstract:

A study reveals that electrical and topographical properties of electrochemically prepared polyaniline (PAn) films are affected by their preparation conditions. The degree of protonation of the monomers and the main reactions that take place during an early stage of the polymerization reaction are important factors determining the chemical structures, conductivities, and morphologies of the PAn film.

Chemical properties

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